Home / 659,401.16-909,980.01-387,475.04

Finding the Fourth Proportional to 659,401.16, 909,980.01 and 387,475.04

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Solution

The fourth proportional to 659,401.16, 909,980.01 and 387,475.04 is: 534,719.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,401.16 : 909,980.01 = 387,475.04 : x
  2. Step 2: Convert to fraction form
    659,401.16/909,980.01 = 387,475.04/x
  3. Step 3: Cross multiply
    659,401.16x = 909,980.01 × 387,475.04
  4. Step 4: Simplify right side
    659,401.16x = 352,594,536,224.05
  5. Step 5: Solve for x
    x = 352,594,536,224.05/659,401.16
  6. Step 6: Final answer
    x = 534,719.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.